154 lines
4.2 KiB
Python
154 lines
4.2 KiB
Python
"""A dummy backend for use in tests.
|
|
|
|
This backend implements the backend API in the simplest way possible. It is
|
|
used in tests of the frontends.
|
|
"""
|
|
|
|
|
|
import pykka
|
|
|
|
from mopidy import backend
|
|
from mopidy.models import Playlist, Ref, SearchResult
|
|
|
|
|
|
def create_proxy(config=None, audio=None):
|
|
return DummyBackend.start(config=config, audio=audio).proxy()
|
|
|
|
|
|
class DummyBackend(pykka.ThreadingActor, backend.Backend):
|
|
def __init__(self, config, audio):
|
|
super().__init__()
|
|
|
|
self.library = DummyLibraryProvider(backend=self)
|
|
if audio:
|
|
self.playback = backend.PlaybackProvider(audio=audio, backend=self)
|
|
else:
|
|
self.playback = DummyPlaybackProvider(audio=audio, backend=self)
|
|
self.playlists = DummyPlaylistsProvider(backend=self)
|
|
|
|
self.uri_schemes = ["dummy"]
|
|
|
|
|
|
class DummyLibraryProvider(backend.LibraryProvider):
|
|
root_directory = Ref.directory(uri="dummy:/", name="dummy")
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
self.dummy_library = []
|
|
self.dummy_get_distinct_result = {}
|
|
self.dummy_browse_result = {}
|
|
self.dummy_find_exact_result = SearchResult()
|
|
self.dummy_search_result = SearchResult()
|
|
|
|
def browse(self, path):
|
|
return self.dummy_browse_result.get(path, [])
|
|
|
|
def get_distinct(self, field, query=None):
|
|
return self.dummy_get_distinct_result.get(field, set())
|
|
|
|
def lookup(self, uri):
|
|
uri = Ref.track(uri=uri).uri
|
|
return [t for t in self.dummy_library if uri == t.uri]
|
|
|
|
def refresh(self, uri=None):
|
|
pass
|
|
|
|
def search(self, query=None, uris=None, exact=False):
|
|
if exact: # TODO: remove uses of dummy_find_exact_result
|
|
return self.dummy_find_exact_result
|
|
return self.dummy_search_result
|
|
|
|
|
|
class DummyPlaybackProvider(backend.PlaybackProvider):
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
self._uri = None
|
|
self._time_position = 0
|
|
|
|
def pause(self):
|
|
return True
|
|
|
|
def play(self):
|
|
return self._uri and self._uri != "dummy:error"
|
|
|
|
def change_track(self, track):
|
|
"""Pass a track with URI 'dummy:error' to force failure"""
|
|
self._uri = track.uri
|
|
self._time_position = 0
|
|
return True
|
|
|
|
def prepare_change(self):
|
|
pass
|
|
|
|
def resume(self):
|
|
return True
|
|
|
|
def seek(self, time_position):
|
|
self._time_position = time_position
|
|
return True
|
|
|
|
def stop(self):
|
|
self._uri = None
|
|
return True
|
|
|
|
def get_time_position(self):
|
|
return self._time_position
|
|
|
|
|
|
class DummyPlaylistsProvider(backend.PlaylistsProvider):
|
|
def __init__(self, backend):
|
|
super().__init__(backend)
|
|
self._playlists = []
|
|
self._allow_save = True
|
|
|
|
def set_dummy_playlists(self, playlists):
|
|
"""For tests using the dummy provider through an actor proxy."""
|
|
self._playlists = playlists
|
|
|
|
def set_allow_save(self, enabled):
|
|
self._allow_save = enabled
|
|
|
|
def as_list(self):
|
|
return [
|
|
Ref.playlist(uri=pl.uri, name=pl.name) for pl in self._playlists
|
|
]
|
|
|
|
def get_items(self, uri):
|
|
playlist = self.lookup(uri)
|
|
if playlist is None:
|
|
return
|
|
return [Ref.track(uri=t.uri, name=t.name) for t in playlist.tracks]
|
|
|
|
def lookup(self, uri):
|
|
uri = Ref.playlist(uri=uri).uri
|
|
for playlist in self._playlists:
|
|
if playlist.uri == uri:
|
|
return playlist
|
|
|
|
def refresh(self):
|
|
pass
|
|
|
|
def create(self, name):
|
|
playlist = Playlist(name=name, uri=f"dummy:{name}")
|
|
self._playlists.append(playlist)
|
|
return playlist
|
|
|
|
def delete(self, uri):
|
|
playlist = self.lookup(uri)
|
|
if playlist:
|
|
self._playlists.remove(playlist)
|
|
|
|
def save(self, playlist):
|
|
if not self._allow_save:
|
|
return None
|
|
|
|
old_playlist = self.lookup(playlist.uri)
|
|
|
|
if old_playlist is not None:
|
|
index = self._playlists.index(old_playlist)
|
|
self._playlists[index] = playlist
|
|
else:
|
|
self._playlists.append(playlist)
|
|
|
|
return playlist
|